@ Sondos Almomani

The pH of solution can be measured by pH meter. pH plays an important role in green synthesis of nano particles.

For more clarity see the section, effect of pH on synthesis in this paper.

Novel Green Synthesis and Characterization of the Antioxidant Activity of Silver Nanoparticles Prepared from Nepeta leucophylla Root Extract

DOI: 10.1080/00032719.2018.1454936

Article Novel Green Synthesis and Characterization of the Antioxidan...

You can do it by using a pH meter or simple pH-monitoring paper. Just immerse the electrode of pH meter after calibration, and get the values of pH. For pH-monitoring paper, put a drop of reaction mixture onto the small piece of dry, and clean pH-paper and match the color change with given pH-scale.

Many thanks, i do appreciate your answer

Finding pH of a solution is a well established field of chemistry. I feel you could have done it easily by searching in google. or visiting your nearest chemistry Lab. Surprised by the question

@ Sondos Almomani

Please write pH. Writing PH as you do displays a level of ignorance and experts will be disinclined to help you. See: http://bfy.tw/Jrs7

U can use pH meter. Old invention.

https://en.wikipedia.org/wiki/PH_meter

@ Sondos Almomani

The pH of solution can be measured by pH meter. pH plays an important role in green synthesis of nano particles.

For more clarity see the section, effect of pH on synthesis in this paper.

Novel Green Synthesis and Characterization of the Antioxidant Activity of Silver Nanoparticles Prepared from Nepeta leucophylla Root Extract

DOI: 10.1080/00032719.2018.1454936

Article Novel Green Synthesis and Characterization of the Antioxidan...

thanks for all researcher

i want to clarify something; i know that PH can be measured using PH meter or even PH paper

my question was

how much i need to take acidic PH (1 or 2 or 3 or 4 too acidic or 5 or 6 slightly acidic ) and how much neutral 7 or 7.1 or 7.4? and when basic will it be 14 PH or 10 or even 8 is good ?

that's my question researchers

i surprise from many answers, really!

this site is for sharing the knowledge and i am new the field and i always try me best to answer my questions with google other asking it here!

again many thanks for all of the answers

Waqas Hassan Tanveer

Jagdeep Singh

Abooali Golzary

Mohamed Hassaan

Alan F Rawle

please read documents with pH meter or pH paper carefully before application

@ Sondos. Do you know what pH is? Please define it for us.

Alan F Rawle

YES, pH IS -log {H+} or - log {H3O+} and its refer to presence of proton in the solution

i want to try to study the effect of pH on nano particles synthesis using green synthesis

i know that the pH will be acidic from literature but i don't know how much yet i still trying my best to find answer before starting the experiment

In nanoparticles synthesis, if I understood your question correctly...you can adjust the pH by the addition of any of HNO3,HCL,H2SO4 or NH4OH, NaOH. Monitor with a pH meter.

yes, that's it Darlington Ashiegbu

how much i should use concentration of HCL or NaOH (1mM)?

@ Sondos 1 mM is a concentration.... How much you add will depend or are you considering this as the background?

A basic knowledge will tell you that 1 M HCl has a pH of 0 and thus millimolar (0.001M) HCl will have a pH of 3. Similarly millimolar NaOH will have a pH of 11. If you need to control the pH for the reaction you are better off with a buffer. I assume you're doing something like producing silver nanoparticles with a 'green synthesis'''. Here the normal precursor would be the diammine silver complex which is alkaline. Monitoring with a pH meter is the easy part.

thank you Alan F Rawle for well clarified answer, i will follow your instruction